메타데이터
| 항목 |
값 |
| Designation |
C/2020 K6 (Rankin) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-09-15T13:36:00.020160Z |
| Orbit solution date (soln_date, UTC) |
2023-06-30T22:15:05Z |
| Obs used |
180 |
| NEO |
- |
| M1 |
12.000 |
| K1 |
5.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-05-26T08:55:19.200000Z |
| Discovery magnitude (MPC) |
20.50 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-01-04.0000000 |
| e |
1.00320001 |
| q (au) |
5.868420 |
| a (au) |
-1833.877552 |
| i (deg) |
103.645272 |
| Ω (om, deg) |
291.528614 |
| ω (w, deg) |
44.307127 |
| M (ma, deg) |
0.001386 |
밝기
산란 + 전체 선형
$$
M_a = (10.183 + 2.419\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.183 |
| n |
2.419 |
| gf |
0.999 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
09:17:48.24 |
+54:34:38.5 |
HIP 45452 |
24.24 |
| 2026-07-29 12:00 |
09:17:59.51 |
+54:33:29.1 |
HIP 45452 |
24.70 |
| 2026-07-30 00:00 |
09:18:10.80 |
+54:32:20.2 |
HIP 45452 |
25.32 |
| 2026-07-30 12:00 |
09:18:22.09 |
+54:31:11.9 |
HIP 45452 |
26.09 |
| 2026-07-31 00:00 |
09:18:33.38 |
+54:30:04.1 |
HIP 45452 |
26.99 |
| 2026-07-31 12:00 |
09:18:44.69 |
+54:28:56.9 |
HIP 45452 |
28.01 |
| 2026-08-01 00:00 |
09:18:55.99 |
+54:27:50.4 |
HIP 45452 |
29.14 |
| 2026-08-01 12:00 |
09:19:07.31 |
+54:26:44.3 |
HIP 45452 |
30.35 |
| 2026-08-02 00:00 |
09:19:18.63 |
+54:25:38.9 |
HIP 45452 |
31.65 |
| 2026-08-02 12:00 |
09:19:29.95 |
+54:24:34.1 |
HIP 45452 |
33.03 |
| 2026-08-03 00:00 |
09:19:41.27 |
+54:23:29.8 |
HIP 45452 |
34.46 |
| 2026-08-03 12:00 |
09:19:52.60 |
+54:22:26.1 |
HIP 45452 |
35.95 |
| 2026-08-04 00:00 |
09:20:03.93 |
+54:21:23.1 |
HIP 45452 |
37.48 |
| 2026-08-04 12:00 |
09:20:15.26 |
+54:20:20.6 |
HIP 45918 |
37.79 |
| 2026-08-05 00:00 |
09:20:26.59 |
+54:19:18.7 |
HIP 45918 |
36.25 |
| 2026-08-05 12:00 |
09:20:37.92 |
+54:18:17.4 |
HIP 45918 |
34.76 |
| 2026-08-06 00:00 |
09:20:49.25 |
+54:17:16.7 |
HIP 45918 |
33.32 |
| 2026-08-06 12:00 |
09:21:00.58 |
+54:16:16.6 |
HIP 45918 |
31.95 |
| 2026-08-07 00:00 |
09:21:11.90 |
+54:15:17.1 |
HIP 45918 |
30.65 |
| 2026-08-07 12:00 |
09:21:23.22 |
+54:14:18.2 |
HIP 45918 |
29.43 |
| 2026-08-08 00:00 |
09:21:34.54 |
+54:13:19.9 |
HIP 45918 |
28.30 |
| 2026-08-08 12:00 |
09:21:45.86 |
+54:12:22.2 |
HIP 45918 |
27.26 |
| 2026-08-09 00:00 |
09:21:57.17 |
+54:11:25.2 |
HIP 45918 |
26.34 |
| 2026-08-09 12:00 |
09:22:08.47 |
+54:10:28.7 |
HIP 45918 |
25.54 |
| 2026-08-10 00:00 |
09:22:19.77 |
+54:09:32.9 |
HIP 45918 |
24.87 |
| 2026-08-10 12:00 |
09:22:31.06 |
+54:08:37.7 |
HIP 45918 |
24.35 |
| 2026-08-11 00:00 |
09:22:42.34 |
+54:07:43.1 |
HIP 45918 |
23.97 |
| 2026-08-11 12:00 |
09:22:53.61 |
+54:06:49.1 |
HIP 45918 |
23.74 |
| 2026-08-12 00:00 |
09:23:04.87 |
+54:05:55.7 |
HIP 46239 |
23.00 |
| 2026-08-12 12:00 |
09:23:16.13 |
+54:05:03.0 |
HIP 46239 |
21.20 |
| 2026-08-13 00:00 |
09:23:27.37 |
+54:04:10.9 |
HIP 46239 |
19.43 |
| 2026-08-13 12:00 |
09:23:38.60 |
+54:03:19.4 |
HIP 46239 |
17.67 |
| 2026-08-14 00:00 |
09:23:49.81 |
+54:02:28.6 |
HIP 46239 |
15.94 |
| 2026-08-14 12:00 |
09:24:01.01 |
+54:01:38.4 |
HIP 46239 |
14.24 |
| 2026-08-15 00:00 |
09:24:12.20 |
+54:00:48.8 |
HIP 46239 |
12.59 |
| 2026-08-15 12:00 |
09:24:23.38 |
+53:59:59.9 |
HIP 46239 |
10.99 |
| 2026-08-16 00:00 |
09:24:34.53 |
+53:59:11.6 |
HIP 46239 |
9.47 |
| 2026-08-16 12:00 |
09:24:45.67 |
+53:58:24.0 |
HIP 46239 |
8.09 |
| 2026-08-17 00:00 |
09:24:56.80 |
+53:57:36.9 |
HIP 46239 |
6.90 |
| 2026-08-17 12:00 |
09:25:07.90 |
+53:56:50.6 |
HIP 46239 |
6.03 |
| 2026-08-18 00:00 |
09:25:18.99 |
+53:56:04.8 |
HIP 46239 |
5.61 |
| 2026-08-18 12:00 |
09:25:30.06 |
+53:55:19.7 |
HIP 46239 |
5.75 |
| 2026-08-19 00:00 |
09:25:41.10 |
+53:54:35.3 |
HIP 46239 |
6.39 |